Seafood mislabeling distorts the true abundance of fish in the sea, defrauds consumers, and can also cause unwanted exposure to harmful pollutants. Patagonian toothfish show wide variation in mercury concentrations such that consumers may be exposed to either acceptable or unacceptable levels of mercury depending on the geographic origins of the fish and the allowable limits of different countries. Consistent with the documented geography of mercury contamination, our analysis showed that, on average, retail fish labeled as MSC-certified Patagonian toothfish had only half the mercury of uncertified fish. However, consideration of genetic data that were informative about seafood substitutions revealed a complex pattern of contamination hidden from consumers: species substitutions artificially inflated the expected difference in mercury levels between MSC-certified and uncertified fish whereas fishery stock substitutions artificially reduced the expected difference in mercury content between MSC-certified and uncertified fish that were actually D. Among MSC-certified fish that were actually D.
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Toothfish are caught by longline, trawl and pot, typically in depths of m. Patagonian toothfish is caught off the coasts of Chile, Argentina, Peru, Uruguay, Patagonia, and around sub-Antarctic islands and seamounts.
Antarctic toothfish is generally caught at latitudes higher than 55degrees South in the circumpolar waters adjacent to Antarctica.
Legally-caught toothfishis usually taken by bottom longlines deployed from vessels of m in length. IUU fishing vessels may longline or gillnet, the latter method considered particuarly destructive to the Antarctic marine environment. IUU-caught toothfish is often transhipped at sea and landed in port by cargo vessels. Toothfish are slow-growing and long-lived, reaching maturity at about years of age and living for up to years. Toothfish caught in the fisheries are typically cm long and weigh kg.
Toothfish have a fusiform a gradual narrowing at both ends body shape, a protruding lower jaw and large lower lip, large eyes and large gill plates. If in doubt as to the species identity, sampling of toothfish catch for protein DNA analysis may be considered. Photographs of toothfish products and packaging could also be taken to assist with identification. Common basic cuts are: headed, gutted and tailed HGT heads, collars and cheeks.
Depending on the market, the fish may also be filleted or simply gutted. For more information see www. Toothfish landed in the port of Contracting Parties will be accompanied by catch and export documents from the point of landing to the point of final consumption. Home Fact Sheet Index. Patagonian Toothfish. Patagonian Toothfish Identification.
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Toothfish are caught by longline, trawl and pot, typically in depths of m. Patagonian toothfish is caught off the coasts of Chile, Argentina, Peru, Uruguay, Patagonia, and around sub-Antarctic islands and seamounts. Antarctic toothfish is generally caught at latitudes higher than 55degrees South in the circumpolar waters adjacent to Antarctica. Legally-caught toothfishis usually taken by bottom longlines deployed from vessels of m in length. IUU fishing vessels may longline or gillnet, the latter method considered particuarly destructive to the Antarctic marine environment.
A close relative, the Antarctic toothfish , Dissostichus mawsoni is found farther south around the edges of the Antarctic shelf; and a Marine Stewardship Council -certified fishery is active in the Ross Sea. They are thought to live up to 50 years  and to reach a length up to 2. Several commercial fisheries exist for Patagonian toothfish, which are detailed below. This species is also sold in the trade under the culinary names Chilean seabass in the United States and Canada; merluza negra in Argentina , Peru , and Uruguay ; legine australe in France; mero in Korea, Japan, and Spain, and bacalao de profundidad in Chile. The name "Chilean seabass" was invented by a fish wholesaler named Lee Lantz in
Southwest Pacific: Macquarie Island. Southern Ocean: South Georgia. Also known from sub-Antarctic islands and seamounts of the Indian sector. Short description Morphology Morphometrics Dorsal spines total : 8 - 10; Dorsal soft rays total : ; Anal spines : 0; Anal soft rays : 28 - 30; Vertebrae : 53 - Lateral line scales upper , lower.